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OverLord2011 [107]
4 years ago
10

2.7 centimeters in 3 seconds x centimeters in 4 seconds

Mathematics
2 answers:
Rzqust [24]4 years ago
6 0
I hope this helps you

deff fn [24]4 years ago
6 0

Answer:

3.6 centimeters in 4 seconds.

Step-by-step explanation:

Given, 2.7 centimeters in 3 seconds. x centimeters in 4 seconds.

We will solve this problem by unitary method.

since in 3 seconds = 2.7 centimeters

therefore, in 1 second = \frac{2.7}{3}

Therefore, in 4 seconds = \frac{2.7}{3} × 4

                                         = \frac{10.8}{3}

                                         = 3.6 centimeters

3.6 centimeters in 4 seconds.

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Answer:

The correct answer is: Option D) 5

Step-by-step explanation:

Given equation is:

3(x + 2) + x = 2x + 16

In order to find that which values of x makes the equation true, we have to put each value of x in the equation. When both sides of equations will be equal, that value of x will be true for the equation.

Putting x = 2

3(2 + 2) + 2 = 2(2) + 16\\3(4)+2 = 4+16\\12+2 = 20\\14 \neq 20

Putting x = 3

3(3 + 2) + 3 = 2(3) + 16\\3(5)+3 = 6+16\\17+3 = 22\\20 \neq 22

Putting x=4

3(4+2)+4 = 2(4)+16\\3(6)+4 = 8+16\\18+4 = 24\\22 \neq 24

Putting x = 5

3(5+2)+5 = 2(5)+16\\3(7)+5 = 10+16\\21+5 = 26\\26 = 26

The equation is true for x = 5

Hence,

The correct answer is: Option D) 5

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